The American bullfrog is the largest frog in North America and can grow to be about eight inches long. They are green to yellow on their topsides, with darker gray coloring on their sides and cream to white bellies. They have a deep-pitched call that can be heard for up to a quarter-mile away on quiet mornings. These frogs are an invasive species, meaning that they are not naturally from Idaho.
American bullfrog in pond, © 2008 Bruce Avera Hunter, Courtesy of life.nbii.gov
Note: Bullfrogs are invasive animals (not native to Idaho) and have been associated with declines of many native Pacific Northwest amphibian species. Please visit Idaho's Amphibians and Reptiles: Rules for Collection, Possession, and Permitting for more information.
Habitat: American bullfrogs love to live in ponds, lakes, and slow-moving streams large enough to avoid crowding and with sufficient vegetation to provide easy cover. You might see one leap from a lake shore if you are walking nearby.
Food: These larger amphibians love crayfish, insects, other frogs, and minnows (small fish).
Fun Facts: Large American bullfrogs have been known to catch and eat small birds!
American bullfrog, © 2006 Charles H. Warren, Courtesy of life.nbii.gov